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authorRenaud Barbier <renaud.barbier@ge.com>2014-01-29 11:06:51 +0000
committerSascha Hauer <s.hauer@pengutronix.de>2014-01-30 08:42:53 +0100
commit4a6c8b1e04695c03d4c7d6e27a21a03e2ecf7050 (patch)
treec65a3d0c1cb4bd953c18847b8984ced168187c7b /fs
parentb99e853aff4dc6f442e62a8187de04877877c4b1 (diff)
downloadbarebox-4a6c8b1e04695c03d4c7d6e27a21a03e2ecf7050.tar.gz
barebox-4a6c8b1e04695c03d4c7d6e27a21a03e2ecf7050.tar.xz
UBIFS: implement readlink entry point
Implement the readlink entry point for future use by the DA923RC. Signed-off-by: Renaud Barbier <renaud.barbier@ge.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/ubifs/ubifs.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index dfa6107458..e2f9593f20 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -24,6 +24,7 @@
*/
#include <common.h>
+#include <malloc.h>
#include <driver.h>
#include <init.h>
#include <malloc.h>
@@ -549,6 +550,42 @@ static int ubifs_stat(struct device_d *dev, const char *filename, struct stat *s
return 0;
}
+static char *ubifs_symlink(struct inode *inode)
+{
+ struct ubifs_inode *ui;
+ char *symlink;
+
+ ui = ubifs_inode(inode);
+ symlink = malloc(ui->data_len + 1);
+
+ memcpy(symlink, ui->data, ui->data_len);
+ symlink[ui->data_len] = '\0';
+
+ return symlink;
+}
+
+static int ubifs_readlink(struct device_d *dev, const char *pathname, char *buf,
+ size_t bufsz)
+{
+ struct ubifs_priv *priv = dev->priv;
+ struct inode *inode;
+ char *symlink;
+ int len;
+
+ inode = ubifs_findfile(priv->sb, pathname);
+
+ if (!inode)
+ return -ENOENT;
+
+ symlink = ubifs_symlink(inode);
+
+ len = min(bufsz, strlen(symlink));
+ memcpy(buf, symlink, len);
+ free(symlink);
+
+ return 0;
+}
+
static int ubifs_probe(struct device_d *dev)
{
struct fs_device_d *fsdev = dev_to_fs_device(dev);
@@ -609,6 +646,7 @@ static struct fs_driver_d ubifs_driver = {
.readdir = ubifs_readdir,
.closedir = ubifs_closedir,
.stat = ubifs_stat,
+ .readlink = ubifs_readlink,
.type = filetype_ubifs,
.flags = 0,
.drv = {